Hi!
I found your script, and wanted to try it on my blog.
After installing it and uploading some photos, I get this error message:

Warning: strstr() [function.strstr]: Empty delimiter. in /home/argonaut/public_html/miamidrums/wp-content/plugins/lazy-k-gallery.php on line 494
at the gallery page, plus:
Warning: strstr() [function.strstr]: Empty delimiter. in /home/argonaut/public_html/miamidrums/wp-content/plugins/lazy-k-gallery.php on line 843
Repeated several times until I see the pictures thumbnails at the bottom:
http://www.miamidrums.com/2007/05/28/gallery/?preview=true

After playing with the configuration, I realized I created another set of folders with thumbnails and I'm stuck with the error descripted before - ownership of the files. They are 664, and I can't touch them!
Then I went to the cache Manager to try to remove them, and I get yet another error message:
Warning: strstr() [function.strstr]: Empty delimiter. in /home/argonaut/public_html/miamidrums/wp-content/plugins/lazy-k-gallery/lazy-k-gallery-admin.php on line 529
I've just update wordpress to version 2.2, Is LAzy-K gallery compatible ?

Oops - sorry I didn't see this post. For your "empty delimiter" errors, first take a look at your "excluded files and folders" settings on the admin page. Are they properly formatted? If you're unsure, send them to me and I'll take a look._________________Korey - Developer of Lazy-K Gallery